Essayist definition, meaning, english dictionary, synonym, see also 'essay',essentialist',essentialism',essaouira', reverso dictionary, english definition, english vocabulary. Definition, usage and a list of omniscient examples in literature omniscient is a literary technique of writing narrative in third person in which a narrator knows the feelings and thoughts of every character in the story. Essayiste : définition, synonymes, citations, traduction dans le dictionnaire de la langue française définition : essayiste désigne un écrivain. An essay is, generally, a piece of writing that gives the author's own argument — but the definition is vague, overlapping with those of a paper.